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badmop

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Posts posted by badmop

  7. Posted

    Can anyone help me track down the cheapest/best priced 16 channel NVR with the best specs.

     

    I have been looking and I'm stuck, what I find is that model numbers aren't matching the specs they have listed, getting a correct answer from sellers is hard.

     

    Maybe some of you have recently purchased a Dahua NVR and can lend some good advice. I've sold some stuff and now I'm ready to order an NVR.

     

    Thanks everybody

  10. Posted

    I'll tell you this story from around 2002 of how great an Optima Yellow Top battery really is...

     

    Back in 2002 or so I was building a vehicle with a v8 350 engine, I had a yellow top battery for it. I had mistakenly hooked up the alternator incorrectly, so it was not charging the battery. I had (2) 10 inch subwoofers with an 800watt amp, also the starter for that vehicle was a more powerful after market starter. I had went 2 weeks, give or take a day starting that vehicle and running the audio system every day for about 2 weeks, until one day getting gas the vehicle would not start again. I got a jump from someone, went home figured out the issue of the alternator, charged the battery.

    Sadly, the battery died completely about 7 years later. Well worth the money.

     

    So the yellow top started my vehicle daily for 2 weeks, while running an audio system. I'd imagine you'd have no problems at all!

     

    Goodluck

     

    *edit, you may not need a bigger battery, but I was just originally throwing out the suggestion. It's a good backup just in case. I don't know what kind of weather you get, especially in winters. But you don't have to be worried about getting stuck somewhere because of a dead battery.

  11. Posted

    Thanks, I'm not extremely worried about the power being run through the ethernet cable. As with my current cameras, I have a power wire run already. So with most IP cameras they have the barrel connector for powering them separate. I was just curious about it being all in 1 cable, that's great as long as they get sufficient power.

     

    I just hope the IR led's on IP Cameras will be as sufficient as the 84 IR leds on my analog cameras. If not, i'll add some illuminators, currely have an illuminator in the driveway.

  12. Posted

    Thank you for the reply, I did forget about the 48v POE part of it also.

    This is the NVR I am looking at, can't order yet but planning everything out slowly.

     

    Dahua NVR4216-8P Megapixel 1080P 16 CH CHANNEL HD IP Network Security Surveillance CCTV Video Recorder NVR, 8 POE Ports Switch Build-in

     

    The longest run of ethernet cable for any of my cameras would be no more than 120feet. I was curious about it as it seemed odd about powering 8 cameras through the NVR, possibly being underpowered, but since I haven't had my hands on any of this new tech, I'm learning as I go.

     

    Thanks

     

     

     

    A few things to consider:

     

    For 12Vdc, cable length becomes an issue, as the wire resistance causes a bigger power loss at 12V (due to the higher current) than at the 48V POE voltage.

     

    Older cams may have less efficient electronics, but you'd have to test that to be sure. The cam you linked recommends a 12V, 2A (24W) supply. This doesn't mean the cam uses that much, but it may. Not many IP cams use that much.

     

    Typical POE only supplies 12-14W, so the majority of POE cams use less than that. POE+ supplies more power, but isn't very common yet. PTZ cams are more likely to need higher power for the motors.

     

    Most basic cams from the mainstream vendors only use 4-8W these days, even with IR on, though high power IR cams will bump up against the 12-14W limit.

     

    For the NVR you have on order, make sure all 8 ports are POE; many only have 4 ports of POE. If they are, that would require over 110W to supply all 8 ports at full power, and the supply you mention only supplies 48W, so you've either got half-power ports with all 8 cams connected, or 4 POE ports.

  13. Posted

    Yes, I had a feeling by what you described that you had 2.4ghz cameras and not IP cameras.

    There should be a switch to change either camera to a different channel, usually like 1,2,3, or 4 channels, or maybe even A,B,C,D etc.

     

    If the cameras do not have a channel switch, they are both operating on the same channel, so you can't use them at the same time. Cell phones, microwaves, and other things can easily interfere with 2.4ghz wireless cameras.

  17. Posted

    Sorry to hear about your situation, also for power, the "optima yellow top" car batteries are great deep cycle batteries. Not cheap but not really expensive, I run one in my everyday car. They are great batteries and would be helpful in this equation too I feel.

     

    Goodluck with the system!

    Info: http://www.autozone.com/miscellaneous-non-automotive/specialty-automotive-battery/optima-yellowtop-battery/467601_0_0/

     

    Also, with your window tint, I believe you can get a doctors note for "darker window tint" Some have had it because of bright sun and eye issues. Just throwing that out there if it would help reduce the glare even more. (As you can install window tint on top of other window tint)

  19. Posted

    I have 2 cameras like this:

    http://www.ebay.com/itm/271401591185?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

     

    They are running off a 12v 4a power supply, anything less and the LEDs are dimmer when plugged into a less powerful power supply. (yes, description says 12v 2a for each camera)

     

    Okay, my question is do HD IP cameras use less power than analog cameras? Because I was looking at a dahua NVR with 8 ports BUILT into the back of the NVR. The power supply for the NVR was 12v 4a, how can that power the NVR, plus 8 IP cameras? If I understand correctly, doesn't the one ethernet cable running to an IP camera have video/audio/power running through the one POE (ethernet) cable?

     

    I'm confused and curious, haha. I have 1 dauha HD IP Camera coming soon and was just doing some thinking.

    Thanks for the responses!

  22. Posted

    Yes, try a different browser. I have had firefox stutter on flash videos from youtube on me, but I can play them no problem in chrome. Firefox has horrible memory leaks, but I'll be honest, I bet it is firefox as the above poster mentions.

     

    It even happens on my octacore desktop pc with 16gb ram, etc. Firefox is great, but has problems at times under certain conditions.

  23. Posted

    I would also like a NVR that has a beeper psychically built into it so that when motion or such is detected, that the NVR unit beeps out loud. My current analog DVR does this with a little piezo buzzer, I have it set for motion detection on certain cameras (which alerts me to when someone comes onto my property) and also when video is lost on any camera (unplugged or being tampered with)

     

    I would imagine that's a common thing for most NVR/DVR units, but I could be wrong. I'm trying to research everything, but it's hard until you physically get your hands on the tech and start fooling with it. I'm pretty knowledgeable with analog stuff, but this newer tech is something new to learn.

     

    Thanks

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